Filter



(No Model.)

J. MILLER.

FILTER.l No. 271,098. Patented Ja.11.2'3,1883.

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UNITED STATES PATENT OFFICE.

JAMES MILLER, OF OAKLAND, CALIFORNIA.

FILTER.

SPECIFICATION forming part of Letters Patent No. 271,098, dated January 2B, 1863.

` Application filed October 16, 1882. (No model.)

To all whom it may concern:

Be it known that I, JAMES MILLER, of Oakland, county of Alameda, State of California, have invented an Improved Filter; and I 5 hereby declare the following to be afull, clear,

and exact description thereof.

My invention relates to a new and useful water-filter; and it consists in the arrangement of vessels with relation to each other,

IoA and in their various divisions into compart- 2o ot'invention.

The object of my invention is to insure a proper ltering of water.

Let A representan exterior vessel, having near its bottom a discharge-cock, a. Within this vessel is another, B, set on short legs Ig.

This vessel is not as high as the exterior one, and is enough smaller in diameter to form a circu mscribin g Water-space, c,which on account ofthe legs bis underlyingas well. Within 3o the vessel B is a vessel or cylinder, C, of a height intermediate between vessels B and A. Its base rests on the bottom of vessel B, and is provided with a number of' discharge-apertures, d, as shown. Supported upon suitable beads molded on the inside of the vessel O is a perforated plate, E', and another, E', lower down.

F is the water-receiver. It consists of a hollow inverted cone, the base of which is 4o formed into a flange and rests upon the rim of lthe main vessel A. Its apex extends down within theiuterior vessel, C, almost to the first plate, E. It is provided with a perforated plate, Gr, and is itself perforated below the said plate.

H is the lid or cover for the device. The entire device is to be made of what is known as open porous terra-cotta]7 and the various divisions and spaces, except the Waterspace c, are to be filled with-filtering materials. To explain more fully, I shall say, for example, that the compartment in the point of the receiver`F under the perforated plate G shall be filled with charcoal. In the vessel O, above the plate E, will be placed gravel, the apex of' the receiver extending well down into it. Between the plates E E' is to be placed marine sand, while under the plate E I shall put willow-charcoal. In the space between the vessels O and D will be marble-dust. When the lid H is removed water is poured into the receiver F. It passes downthrou'gh the perforated plate G, and through the body ot'charcoal, nding its way through the perforated point of the receiver into the body of gravel in vessel O. It filters down through the perforated plates E E', the intervening marine sand, and the underlying body of willow-l charcoal. It then finds its way through the bottom apertures, d, of vessel C into the marble-dust, through which it rises, and finally flows over the edge of' vessel B into Vthe waterspace c as well-filtered water.

Having thus described my invention, what I claim as new, and desire to secure bly Letters Patent, is

In a water-filter, the combination of the vessel A, the vessel B, between which is formed the water-space c, the interior vessel, (C, having perforations d, said vessel being higher than vessel B, and between which and said 4vessel B filtering material is placed, perforated plates E E', dividing vessel O into compartments for containin g various filtering substances, and the water-receiver F, supported on the rim of vessel A, and having a perforated point filled with a filtering material and extending into vessel O, and a perforated plate, G, in said point, substantially as herein described.

In witness whereof I hereunto set my hand.

JAMES MILLER. Witnesses:

S. H. NoURsE, J. H. BLooD. 

